Elevational adjusting device using air pressure rod to lift object

ABSTRACT

An elevational adjusting device using an air pressure rod to lift an object is disclosed. A connector is used to connect the object with the air pressure rod. The adjusting device comprises an operating rod fixed to the object to be adjusted; a rope; and a movable plate pivotally connected to the connector. The pull end and the pressure applied end of the movable plate are not at the same line. It is only necessary to rotate the operating rod, the rope will be pulled to drive the pressure applied end of the movable plate to touch a touch moving end of the movable plate of the air pressure rod, causing the air pressure rod to move telescopically to drive the object to move upwards or downwards so as to adjust the position of the object.

FIELD OF THE INVENTION

[0001] The present invention relates to an elevational adjusting device,and particularly to an elevational adjusting device using an airpressure rod to lift an object, wherein a simple device is used to touchand move an air pressure rod so as to adjust the elevation of an object.

BACKGROUND OF THE INVENTION

[0002] Many objects (such as tables, chairs, etc.) are connected to airpressure rod. The elevations of these objects are adjusted by touchingthe air pressure rod to telescopically move. Referring to FIG. 1, aprior art air pressure rod 10 is illustrated, which is used to adjustthe height of a table 11. Generally, the air pressure rod 10 is fixedbetween a table plate 12 and the table legs 13. Generally, an operatingrod 14 is installed near a touch moving end 101 of the air pressure rod10. By moving the operating rod 14, the touch moving end 101 of the airpressure rod 10 is moved so as to control the telescopic movement of theair pressure rod 10.

[0003] Although above way for controlling the telescopic movement of theair pressure rod 10 by using the operating rod 14 is general and is anacceptable way, the operating rod 14 has generally a fixed shape and isconfined by assembly ways. For example, to install the operating rod 14near the air pressure rod 10, if the table plate 12 is too large, theuser's hand must extend to the operating rod 14 for operating theoperating rod 14. However, the operation is inconvenient. Thereby, anextendable supporting frame 141 is designed for moving the operating rod14 to the outer side of the table plate 12 for being operatedconveniently. The sizes of the table plate 14 are not uniform, and thusthe size of the operating rods 14 must be changed (generally, the sizeof operating rods is specific). As a result, manufacturing cost and timewill be increased and thus the efficiency is low.

SUMMARY OF THE INVENTION

[0004] Accordingly, the primary object of the present invention is toprovide an elevational adjusting device, wherein a simple device is usedto touch and move an air pressure rod so as to adjust the elevation ofan object.

[0005] To achieve above object, the present invention provide anelevational adjusting device using an air pressure rod to lift anobject. A connector is used to connect the object with the air pressurerod. The adjusting device comprises an operating rod fixed to the objectto be adjusted; a rope having one end connected to the operating rod andanother end of the rope connected to a movable plate; and a movableplate pivotally connected to the connector. The movable plate isrotatable. The movable plate has at least one pull end and one pressureapplied end. The pull end is connected to the rope and the pressureapplied end is near a telescopic end of the air pressure rod. The pullend and the pressure applied end are not at the same line.

[0006] It is only necessary to rotate the operating rod, the rope willbe pulled to drive the pressure applied end of the movable plate totouch a touch moving end of the movable plate of the air pressure rod,causing the air pressure rod to be telescopic to drive the object tomove upwards or downwards so as to adjust the position of the object.

[0007] The various objects and advantages of the present invention willbe more readily understood from the following detailed description whenread in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008]FIG. 1 is a perspective view showing that a prior art pressureapplied end is used to drive an object to displace.

[0009]FIG. 2 is an exploded perspective view of the operatingelevational adjusting device of the present invention.

[0010]FIG. 3 is an assembled view of the elevational adjusting device ofthe present invention.

[0011]FIG. 4 shows one embodiment, wherein the elevational adjustingdevice of the present invention is installed to an object.

[0012]FIG. 5 shows one application of the present invention.

[0013]FIG. 6 shows one embodiment that the elevational adjusting deviceof the present invention is used to displace an object.

[0014]FIG. 7 shows another embodiment that the elevational adjustingdevice of the present invention is used to displace an object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Referring to FIGS. 2, 3 and 4, the operation device of thepresent invention comprises the following components.

[0016] An operating rod 20 is fixed to an object to be adjusted. In thisembodiment, the object is a table 5.

[0017] A rope 30 has one end connected to an operating rod 20 andanother end of the rope 30 is connected to a movable plate 40.

[0018] A movable plate 40 has a pull end 41 and a pressure applied end42. The pull end 41 is connected to the rope 30 and the pressure appliedend 42 is near a telescopic end 51 of the air pressure rod 50. The pullend 41 and the pressure applied end 42 are not at the same line.

[0019] As shown in the figures, the main portion of the operating rod 20is enclosed within a box 21. The exposed portion of the operating rod 20is an operating handle 22. The box 21 serves to fix the handle 22 to anyposition of the table 5.

[0020] One side 211 of the box 21 is opened so that the operating rod 20may move easily. In this embodiment, the end of the operating rod 20connected to the rope 30 has a line weight 201 which is pivotallyconnected to the box 21 through a shaft 202, thereby, the operating rod20 may rotate and displace.

[0021] Besides, one side of the box 21, i.e., the exposed side of theoperating handle 22, has a slot 212 so that the operating handle 22 maymove within the range of the slot 212. In this embodiment, the operatinghandle 22 moves transversally. At the distal end that the operatinghandle moves, a positioning hole 213 is formed. The positioning hole 213is perpendicular to a slot 212 so that after the operating rod 20 pullsthe rope 30, the operating rod 20 can be positioned in the positioninghole 213 (referring to FIG. 5)

[0022] The movable plate 40 is pivotally connected to the connector 52of the table 5 by a retaining plate 43 between the pull end 41 and thepressure applied end 42. The connector serves to connect the table 5 andthe air pressure rod 50. The connector 52 in the drawing is a sheetwhich may have a retaining piece 521 at position with respect to theretaining plate 43. A pin 53 serves to connect the retaining plate 43with the retaining piece 521, thereby, the movable plate 40 beingmovable upwards and downwards. Since the pull end 41 of the movableplate 40 is connected to the rope 30, only if the rope 30 is pulled, thepressure applied end 42 of the movable plate 40 will swing downwards totouch the touch moving end 51 of the air pressure rod 50.

[0023] In above description, the force of the rope 30 to pull themovable plate 40 is uniform and smooth, a bottom of the pull end 41 ofthe movable plate 40 is installed with a round supporting seat 411. Whenthe rope 30 passes through the pull end 41, it is connected to a stopper301 so as to confine the rope 30. Preferable, the stopper 301 has a ballshape or a cylindrical shape.

[0024] With reference to FIGS. 6 and 7, the application of the presentinvention is illustrated. In these two drawings, to be easily understoodthe interaction of the operating rod 20 and the movable plate 40, theair pressure rod 50, table 5, and movable plate 40 are presented by afront view, and the operating rod 20 is fixed to a bottom of the table5, which is an elevational cross section view.

[0025] Referring to FIG. 7, it is illustrated that the operating handle22 of the operating rod 20 is moved transversally to the positioninghole 213 of the box 21 so that the rope 30 is pulled and the pressureapplied end 42 of the movable plate 40 will touch and move the touchmoving end 51 of the air pressure rod 50. Thereby, the air pressure rod50 will move telescopically to drive the connected table 5 to moveupwards and downwards.

[0026] Although the present invention has been described with referenceto the preferred embodiments, it will be understood that the inventionis not limited to the details described thereof. Various substitutionsand modifications have been suggested in the foregoing description, andothers will occur to those of ordinary skill in the art. Therefore, allsuch substitutions and modifications are intended to be embraced withinthe scope of the invention as defined in the appended claims.

What is claimed is:
 1. An elevational adjusting device using an airpressure rod to lift an object; a connector being used to connect theobject with the air pressure rod; the adjusting device comprising: anoperating rod fixed to the object to be adjusted; a rope having one endconnected to the operating rod; another end of the rope being connectedto a movable plate; and a movable plate pivotally connected to theconnector; the movable plate being rotatable; the movable plate havingat least one pull end and one pressure applied end; the pull end beingconnected to the rope and the pressure applied end being near atelescopic end of the air pressure rod; the pull end and the pressureapplied end being not at the same line; wherein it is only necessary torotate the operating rod, the rope will be pulled to drive the pressureapplied end of the movable plate to touch a touch moving end of themovable plate of the air pressure rod, causing the air pressure rod tobe telescopic to drive the object to move upwards or downwards so as toadjust a position of the object.
 2. The elevational adjusting device asclaim in claim 1, wherein a portion of the operating rod is enclosedwithin a box; an exposed portion of the operating rod is an operatinghandle; the box serves to fix the handle to a position of the object tobe adjusted.
 3. The elevational adjusting device as claim in claim 1,wherein one side of the box is opened so that the operating rod ismovable.
 4. The elevational adjusting device as claim in claim 1,wherein one end of the operating rod connected to the rope has a lineweight which is pivotally connected to the box through a shaft, thereby,the operating rod is rotatable and displaceable.
 5. The elevationaladjusting device as claim in claim 2, wherein one end of the operatingrod connected to the rope has a line weight which is pivotally connectedto the box through a shaft, thereby, the operating rod being rotatableand displaceable.
 6. The elevational adjusting device as claim in claim2, wherein an exposed side of the operating handle is at one side of thebox and has a slot so that the operating handle is movable within arange of the slot; at the distal end that the operating handle moves, apositioning hole is formed; the positioning hole is perpendicular to aslot so that after the operating rod pulls the rope, the operating rodis positioned in the positioning hole.
 7. The elevational adjustingdevice as claim in claim 1, wherein a bottom of the pull end of themovable plate is a round supporting seat; after the rope passes throughthe pull end, the rope is connected to a stopper so that the rope willnot release.
 8. The elevational adjusting device as claim in claim 6,wherein the stopper has a shape selecting from one of a group containinga ball shape and a cylindrical shape.